acpi.c revision 1.291
1 /* $NetBSD: acpi.c,v 1.291 2021/04/24 23:36:52 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum of By Noon Software, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 2003 Wasabi Systems, Inc. 34 * All rights reserved. 35 * 36 * Written by Frank van der Linden for Wasabi Systems, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed for the NetBSD Project by 49 * Wasabi Systems, Inc. 50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 51 * or promote products derived from this software without specific prior 52 * written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 64 * POSSIBILITY OF SUCH DAMAGE. 65 */ 66 67 /* 68 * Copyright 2001, 2003 Wasabi Systems, Inc. 69 * All rights reserved. 70 * 71 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 72 * 73 * Redistribution and use in source and binary forms, with or without 74 * modification, are permitted provided that the following conditions 75 * are met: 76 * 1. Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 2. Redistributions in binary form must reproduce the above copyright 79 * notice, this list of conditions and the following disclaimer in the 80 * documentation and/or other materials provided with the distribution. 81 * 3. All advertising materials mentioning features or use of this software 82 * must display the following acknowledgement: 83 * This product includes software developed for the NetBSD Project by 84 * Wasabi Systems, Inc. 85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 86 * or promote products derived from this software without specific prior 87 * written permission. 88 * 89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 99 * POSSIBILITY OF SUCH DAMAGE. 100 */ 101 102 #include <sys/cdefs.h> 103 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.291 2021/04/24 23:36:52 thorpej Exp $"); 104 105 #include "pci.h" 106 #include "opt_acpi.h" 107 #include "opt_pcifixup.h" 108 109 #include <sys/param.h> 110 #include <sys/device.h> 111 #include <sys/kernel.h> 112 #include <sys/kmem.h> 113 #include <sys/malloc.h> 114 #include <sys/module.h> 115 #include <sys/mutex.h> 116 #include <sys/sysctl.h> 117 #include <sys/systm.h> 118 #include <sys/timetc.h> 119 120 #include <dev/acpi/acpireg.h> 121 #include <dev/acpi/acpivar.h> 122 #include <dev/acpi/acpi_mcfg.h> 123 #include <dev/acpi/acpi_osd.h> 124 #include <dev/acpi/acpi_pci.h> 125 #include <dev/acpi/acpi_power.h> 126 #include <dev/acpi/acpi_timer.h> 127 #include <dev/acpi/acpi_wakedev.h> 128 129 #include <machine/acpi_machdep.h> 130 131 #include "ioconf.h" 132 133 #define _COMPONENT ACPI_BUS_COMPONENT 134 ACPI_MODULE_NAME ("acpi") 135 136 /* 137 * The acpi_active variable is set when the ACPI subsystem is active. 138 * Machine-dependent code may wish to skip other steps (such as attaching 139 * subsystems that ACPI supercedes) when ACPI is active. 140 */ 141 int acpi_active = 0; 142 int acpi_suspended = 0; 143 int acpi_force_load = 0; 144 int acpi_verbose_loaded = 0; 145 146 struct acpi_softc *acpi_softc = NULL; 147 static uint64_t acpi_root_pointer; 148 extern kmutex_t acpi_interrupt_list_mtx; 149 static ACPI_HANDLE acpi_scopes[4]; 150 ACPI_TABLE_HEADER *madt_header; 151 ACPI_TABLE_HEADER *gtdt_header; 152 153 /* 154 * This structure provides a context for the ACPI 155 * namespace walk performed in acpi_build_tree(). 156 */ 157 struct acpi_walkcontext { 158 struct acpi_softc *aw_sc; 159 struct acpi_devnode *aw_parent; 160 }; 161 162 /* 163 * Ignored HIDs. 164 */ 165 static const char * const acpi_ignored_ids[] = { 166 #if defined(i386) || defined(x86_64) 167 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */ 168 "PNP0000", /* AT interrupt controller is handled internally */ 169 "PNP0001", /* EISA interrupt controller is handled internally */ 170 "PNP0200", /* AT DMA controller is handled internally */ 171 "PNP0A??", /* PCI Busses are handled internally */ 172 "PNP0B00", /* AT RTC is handled internally */ 173 "PNP0C02", /* PnP motherboard resources */ 174 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 175 #endif 176 #if defined(x86_64) 177 "PNP0C04", /* FPU is handled internally */ 178 #endif 179 #if defined(__aarch64__) 180 "ACPI0004", /* ACPI module devices are handled internally */ 181 "PNP0C0F", /* ACPI PCI link devices are handled internally */ 182 #endif 183 NULL 184 }; 185 186 /* 187 * Devices that should be attached early. 188 */ 189 static const char * const acpi_early_ids[] = { 190 "PNP0C09", /* acpiec(4) */ 191 NULL 192 }; 193 194 static int acpi_match(device_t, cfdata_t, void *); 195 static int acpi_submatch(device_t, cfdata_t, const int *, void *); 196 static void acpi_attach(device_t, device_t, void *); 197 static int acpi_detach(device_t, int); 198 static void acpi_childdet(device_t, device_t); 199 static bool acpi_suspend(device_t, const pmf_qual_t *); 200 static bool acpi_resume(device_t, const pmf_qual_t *); 201 202 static void acpi_build_tree(struct acpi_softc *); 203 static void acpi_config_tree(struct acpi_softc *); 204 static void acpi_config_dma(struct acpi_softc *); 205 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t, 206 void *, void **); 207 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t, 208 void *, void **); 209 static void acpi_make_name(struct acpi_devnode *, uint32_t); 210 211 static int acpi_rescan(device_t, const char *, const int *); 212 static void acpi_rescan_early(struct acpi_softc *); 213 static void acpi_rescan_nodes(struct acpi_softc *); 214 static void acpi_rescan_capabilities(device_t); 215 static int acpi_print(void *aux, const char *); 216 217 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *); 218 219 static void acpi_register_fixed_button(struct acpi_softc *, int); 220 static void acpi_deregister_fixed_button(struct acpi_softc *, int); 221 static uint32_t acpi_fixed_button_handler(void *); 222 static void acpi_fixed_button_pressed(void *); 223 224 static void acpi_sleep_init(struct acpi_softc *); 225 226 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO); 227 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO); 228 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO); 229 230 static bool acpi_is_scope(struct acpi_devnode *); 231 static ACPI_TABLE_HEADER *acpi_map_rsdt(void); 232 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *); 233 234 void acpi_print_verbose_stub(struct acpi_softc *); 235 void acpi_print_dev_stub(const char *); 236 237 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **); 238 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE); 239 240 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub; 241 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub; 242 243 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *); 244 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *); 245 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int); 246 247 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc), 248 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet); 249 250 /* 251 * Probe for ACPI support. 252 * 253 * This is called by the machine-dependent ACPI front-end. 254 * Note: this is not an autoconfiguration interface function. 255 */ 256 int 257 acpi_probe(void) 258 { 259 ACPI_TABLE_HEADER *rsdt; 260 ACPI_STATUS rv; 261 int quirks; 262 263 if (acpi_softc != NULL) 264 panic("%s: already probed", __func__); 265 266 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE); 267 268 /* 269 * Start up ACPICA. 270 */ 271 AcpiGbl_EnableInterpreterSlack = true; 272 273 rv = AcpiInitializeSubsystem(); 274 275 if (ACPI_FAILURE(rv)) { 276 aprint_error("%s: failed to initialize subsystem\n", __func__); 277 return 0; 278 } 279 280 /* 281 * Allocate space for RSDT/XSDT and DSDT, 282 * but allow resizing if more tables exist. 283 */ 284 rv = AcpiInitializeTables(NULL, 2, true); 285 286 if (ACPI_FAILURE(rv)) { 287 aprint_error("%s: failed to initialize tables\n", __func__); 288 goto fail; 289 } 290 291 rv = AcpiLoadTables(); 292 293 if (ACPI_FAILURE(rv)) { 294 aprint_error("%s: failed to load tables\n", __func__); 295 goto fail; 296 } 297 298 rsdt = acpi_map_rsdt(); 299 300 if (rsdt == NULL) { 301 aprint_error("%s: failed to map RSDT\n", __func__); 302 goto fail; 303 } 304 305 quirks = acpi_find_quirks(); 306 307 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) { 308 309 aprint_normal("ACPI: BIOS is listed as broken:\n"); 310 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, " 311 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId, 312 rsdt->OemRevision, rsdt->AslCompilerId, 313 rsdt->AslCompilerRevision); 314 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n"); 315 316 acpi_unmap_rsdt(rsdt); 317 goto fail; 318 } 319 320 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) { 321 322 aprint_normal("ACPI: BIOS is too old (%s). " 323 "Set acpi_force_load to use.\n", 324 pmf_get_platform("bios-date")); 325 326 acpi_unmap_rsdt(rsdt); 327 goto fail; 328 } 329 330 acpi_unmap_rsdt(rsdt); 331 332 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE)); 333 334 if (ACPI_FAILURE(rv)) { 335 aprint_error("%s: failed to enable subsystem\n", __func__); 336 goto fail; 337 } 338 339 return 1; 340 341 fail: 342 (void)AcpiTerminate(); 343 344 return 0; 345 } 346 347 void 348 acpi_disable(void) 349 { 350 351 if (acpi_softc == NULL) 352 return; 353 354 KASSERT(acpi_active != 0); 355 356 if (AcpiGbl_FADT.SmiCommand != 0) 357 AcpiDisable(); 358 } 359 360 int 361 acpi_check(device_t parent, const char *ifattr) 362 { 363 return config_search(parent, NULL, 364 CFARG_SUBMATCH, acpi_submatch, 365 CFARG_IATTR, ifattr, 366 CFARG_EOL) != NULL; 367 } 368 369 int 370 acpi_reset(void) 371 { 372 struct acpi_softc *sc = acpi_softc; 373 ACPI_GENERIC_ADDRESS *ResetReg; 374 ACPI_PCI_ID PciId; 375 ACPI_STATUS status; 376 377 if (sc == NULL) 378 return ENXIO; 379 380 ResetReg = &AcpiGbl_FADT.ResetRegister; 381 382 /* Check if the reset register is supported */ 383 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) || 384 !ResetReg->Address) { 385 return ENOENT; 386 } 387 388 switch (ResetReg->SpaceId) { 389 case ACPI_ADR_SPACE_PCI_CONFIG: 390 PciId.Segment = PciId.Bus = 0; 391 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address); 392 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address); 393 status = AcpiOsWritePciConfiguration(&PciId, 394 ACPI_GAS_PCI_REGOFF(ResetReg->Address), 395 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth); 396 break; 397 case ACPI_ADR_SPACE_SYSTEM_IO: 398 case ACPI_ADR_SPACE_SYSTEM_MEMORY: 399 status = AcpiReset(); 400 break; 401 default: 402 status = AE_TYPE; 403 break; 404 } 405 406 return ACPI_FAILURE(status) ? EIO : 0; 407 } 408 409 /* 410 * Autoconfiguration. 411 */ 412 static int 413 acpi_match(device_t parent, cfdata_t match, void *aux) 414 { 415 /* 416 * XXX: Nada; MD code has called acpi_probe(). 417 */ 418 return 1; 419 } 420 421 static int 422 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux) 423 { 424 struct cfattach *ca; 425 426 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname); 427 428 return (ca == &acpi_ca); 429 } 430 431 static void 432 acpi_attach(device_t parent, device_t self, void *aux) 433 { 434 struct acpi_softc *sc = device_private(self); 435 struct acpibus_attach_args *aa = aux; 436 ACPI_TABLE_HEADER *rsdt, *hdr; 437 ACPI_STATUS rv; 438 int i; 439 440 aprint_naive("\n"); 441 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION); 442 443 if (acpi_softc != NULL) 444 panic("%s: already attached", __func__); 445 446 rsdt = acpi_map_rsdt(); 447 448 if (rsdt == NULL) 449 aprint_error_dev(self, "X/RSDT: Not found\n"); 450 else { 451 aprint_verbose_dev(self, 452 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n", 453 rsdt->OemId, rsdt->OemTableId, 454 rsdt->OemRevision, 455 rsdt->AslCompilerId, rsdt->AslCompilerRevision); 456 } 457 458 acpi_unmap_rsdt(rsdt); 459 460 sc->sc_dev = self; 461 sc->sc_root = NULL; 462 463 sc->sc_sleepstate = ACPI_STATE_S0; 464 sc->sc_quirks = acpi_find_quirks(); 465 466 sysmon_power_settype("acpi"); 467 468 sc->sc_iot = aa->aa_iot; 469 sc->sc_memt = aa->aa_memt; 470 sc->sc_pciflags = aa->aa_pciflags; 471 sc->sc_ic = aa->aa_ic; 472 sc->sc_dmat = aa->aa_dmat; 473 sc->sc_dmat64 = aa->aa_dmat64; 474 475 SIMPLEQ_INIT(&sc->ad_head); 476 477 acpi_softc = sc; 478 479 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true) 480 aprint_error_dev(self, "couldn't establish power handler\n"); 481 482 /* 483 * Bring ACPICA on-line. 484 */ 485 486 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION); 487 488 if (ACPI_FAILURE(rv)) 489 goto fail; 490 491 /* 492 * Early initialization of acpiec(4) via ECDT. 493 */ 494 config_found(self, aa, NULL, 495 CFARG_IATTR, "acpiecdtbus", 496 CFARG_EOL); 497 498 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION); 499 500 if (ACPI_FAILURE(rv)) 501 goto fail; 502 503 /* 504 * Scan the namespace and build our device tree. 505 */ 506 acpi_build_tree(sc); 507 508 #if NPCI > 0 509 /* 510 * Probe MCFG table 511 */ 512 acpimcfg_probe(sc); 513 #endif 514 515 acpi_md_callback(sc); 516 517 /* 518 * Early initialization of the _PDC control method 519 * that may load additional SSDT tables dynamically. 520 */ 521 (void)acpi_md_pdc(); 522 523 /* 524 * Install global notify handlers. 525 */ 526 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 527 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL); 528 529 if (ACPI_FAILURE(rv)) 530 goto fail; 531 532 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT, 533 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL); 534 535 if (ACPI_FAILURE(rv)) 536 goto fail; 537 538 acpi_active = 1; 539 540 if (!AcpiGbl_ReducedHardware) { 541 /* Show SCI interrupt. */ 542 aprint_verbose_dev(self, "SCI interrupting at int %u\n", 543 AcpiGbl_FADT.SciInterrupt); 544 545 /* 546 * Install fixed-event handlers. 547 */ 548 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 549 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 550 } 551 552 /* 553 * Load drivers that operate on System Description Tables. 554 */ 555 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) { 556 rv = AcpiGetTableByIndex(i, &hdr); 557 if (ACPI_FAILURE(rv)) { 558 continue; 559 } 560 config_found(sc->sc_dev, hdr, NULL, 561 CFARG_IATTR, "acpisdtbus", 562 CFARG_EOL); 563 AcpiPutTable(hdr); 564 } 565 566 acpitimer_init(sc); 567 acpi_config_tree(sc); 568 acpi_sleep_init(sc); 569 570 #ifdef ACPI_DEBUG 571 acpi_debug_init(); 572 #endif 573 574 /* 575 * Print debug information. 576 */ 577 acpi_print_verbose(sc); 578 579 return; 580 581 fail: 582 aprint_error("%s: failed to initialize ACPI: %s\n", 583 __func__, AcpiFormatException(rv)); 584 } 585 586 /* 587 * XXX: This is incomplete. 588 */ 589 static int 590 acpi_detach(device_t self, int flags) 591 { 592 struct acpi_softc *sc = device_private(self); 593 ACPI_STATUS rv; 594 int rc; 595 596 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 597 ACPI_SYSTEM_NOTIFY, acpi_notify_handler); 598 599 if (ACPI_FAILURE(rv)) 600 return EBUSY; 601 602 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT, 603 ACPI_DEVICE_NOTIFY, acpi_notify_handler); 604 605 if (ACPI_FAILURE(rv)) 606 return EBUSY; 607 608 if ((rc = config_detach_children(self, flags)) != 0) 609 return rc; 610 611 if ((rc = acpitimer_detach()) != 0) 612 return rc; 613 614 if (!AcpiGbl_ReducedHardware) { 615 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON); 616 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON); 617 } 618 619 pmf_device_deregister(self); 620 621 acpi_softc = NULL; 622 623 return 0; 624 } 625 626 static void 627 acpi_childdet(device_t self, device_t child) 628 { 629 struct acpi_softc *sc = device_private(self); 630 struct acpi_devnode *ad; 631 632 if (sc->sc_apmbus == child) 633 sc->sc_apmbus = NULL; 634 635 if (sc->sc_hpet == child) 636 sc->sc_hpet = NULL; 637 638 if (sc->sc_wdrt == child) 639 sc->sc_wdrt = NULL; 640 641 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 642 643 if (ad->ad_device == child) 644 ad->ad_device = NULL; 645 } 646 } 647 648 static bool 649 acpi_suspend(device_t dv, const pmf_qual_t *qual) 650 { 651 652 acpi_suspended = 1; 653 654 return true; 655 } 656 657 static bool 658 acpi_resume(device_t dv, const pmf_qual_t *qual) 659 { 660 661 acpi_suspended = 0; 662 663 return true; 664 } 665 666 /* 667 * Namespace scan. 668 */ 669 static void 670 acpi_build_tree(struct acpi_softc *sc) 671 { 672 struct acpi_walkcontext awc; 673 674 /* 675 * Get the root scope handles. 676 */ 677 KASSERT(__arraycount(acpi_scopes) == 4); 678 679 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]); 680 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]); 681 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]); 682 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]); 683 684 /* 685 * Make the root node. 686 */ 687 awc.aw_sc = sc; 688 awc.aw_parent = NULL; 689 690 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL); 691 692 KASSERT(sc->sc_root == NULL); 693 KASSERT(awc.aw_parent != NULL); 694 695 sc->sc_root = awc.aw_parent; 696 697 /* 698 * Build the internal namespace. 699 */ 700 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX, 701 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL); 702 703 /* 704 * Scan the internal namespace. 705 */ 706 (void)acpi_pcidev_scan(sc->sc_root); 707 } 708 709 static void 710 acpi_config_tree(struct acpi_softc *sc) 711 { 712 /* 713 * Assign bus_dma resources 714 */ 715 acpi_config_dma(sc); 716 717 /* 718 * Configure all everything found "at acpi?". 719 */ 720 (void)acpi_rescan(sc->sc_dev, NULL, NULL); 721 722 /* 723 * Update GPE information. 724 * 725 * Note that this must be called after 726 * all GPE handlers have been installed. 727 */ 728 (void)AcpiUpdateAllGpes(); 729 730 /* 731 * Defer rest of the configuration. 732 */ 733 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities); 734 } 735 736 static void 737 acpi_config_dma(struct acpi_softc *sc) 738 { 739 struct acpi_devnode *ad; 740 741 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 742 743 if (ad->ad_device != NULL) 744 continue; 745 746 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 747 continue; 748 749 ad->ad_dmat = acpi_get_dma_tag(sc, ad); 750 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad); 751 } 752 } 753 754 static ACPI_STATUS 755 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level, 756 void *context, void **status) 757 { 758 struct acpi_walkcontext *awc = context; 759 struct acpi_softc *sc = awc->aw_sc; 760 struct acpi_devnode *ad; 761 ACPI_DEVICE_INFO *devinfo; 762 ACPI_OBJECT_TYPE type; 763 ACPI_STATUS rv; 764 765 rv = AcpiGetObjectInfo(handle, &devinfo); 766 767 if (ACPI_FAILURE(rv)) 768 return AE_OK; /* Do not terminate the walk. */ 769 770 type = devinfo->Type; 771 772 switch (type) { 773 774 case ACPI_TYPE_DEVICE: 775 acpi_activate_device(handle, &devinfo); 776 /* FALLTHROUGH */ 777 778 case ACPI_TYPE_PROCESSOR: 779 case ACPI_TYPE_THERMAL: 780 case ACPI_TYPE_POWER: 781 782 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP); 783 784 ad->ad_device = NULL; 785 ad->ad_notify = NULL; 786 ad->ad_pciinfo = NULL; 787 ad->ad_wakedev = NULL; 788 789 ad->ad_type = type; 790 ad->ad_handle = handle; 791 ad->ad_devinfo = devinfo; 792 793 ad->ad_root = sc->sc_dev; 794 ad->ad_parent = awc->aw_parent; 795 796 acpi_match_node_init(ad); 797 acpi_make_name(ad, devinfo->Name); 798 799 /* 800 * Identify wake GPEs from the _PRW. Note that 801 * AcpiUpdateAllGpes() must be called afterwards. 802 */ 803 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE) 804 acpi_wakedev_init(ad); 805 806 SIMPLEQ_INIT(&ad->ad_child_head); 807 SIMPLEQ_INSERT_TAIL(&sc->ad_head, ad, ad_list); 808 809 if (ad->ad_parent != NULL) { 810 811 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head, 812 ad, ad_child_list); 813 } 814 815 awc->aw_parent = ad; 816 break; 817 818 default: 819 ACPI_FREE(devinfo); 820 break; 821 } 822 823 return AE_OK; 824 } 825 826 static ACPI_STATUS 827 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level, 828 void *context, void **status) 829 { 830 struct acpi_walkcontext *awc = context; 831 832 KASSERT(awc != NULL); 833 KASSERT(awc->aw_parent != NULL); 834 835 if (handle == awc->aw_parent->ad_handle) 836 awc->aw_parent = awc->aw_parent->ad_parent; 837 838 return AE_OK; 839 } 840 841 static void 842 acpi_make_name(struct acpi_devnode *ad, uint32_t name) 843 { 844 ACPI_NAME_UNION *anu; 845 int clear, i; 846 847 anu = (ACPI_NAME_UNION *)&name; 848 ad->ad_name[4] = '\0'; 849 850 for (i = 3, clear = 0; i >= 0; i--) { 851 852 if (clear == 0 && anu->Ascii[i] == '_') 853 ad->ad_name[i] = '\0'; 854 else { 855 ad->ad_name[i] = anu->Ascii[i]; 856 clear = 1; 857 } 858 } 859 860 if (ad->ad_name[0] == '\0') 861 ad->ad_name[0] = '_'; 862 } 863 864 bus_dma_tag_t 865 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 866 { 867 return sc->sc_dmat; 868 } 869 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag); 870 871 bus_dma_tag_t 872 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad) 873 { 874 return sc->sc_dmat64; 875 } 876 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag); 877 878 pci_chipset_tag_t 879 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn) 880 { 881 return NULL; 882 } 883 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag); 884 885 /* 886 * Device attachment. 887 */ 888 static int 889 acpi_rescan(device_t self, const char *ifattr, const int *locators) 890 { 891 struct acpi_softc *sc = device_private(self); 892 struct acpi_attach_args aa; 893 894 /* 895 * Try to attach hpet(4) first via a specific table. 896 */ 897 aa.aa_memt = sc->sc_memt; 898 899 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) { 900 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL, 901 CFARG_IATTR, "acpihpetbus", 902 CFARG_EOL); 903 } 904 905 /* 906 * A two-pass scan for acpinodebus. 907 */ 908 if (ifattr_match(ifattr, "acpinodebus")) { 909 acpi_rescan_early(sc); 910 acpi_rescan_nodes(sc); 911 } 912 913 /* 914 * Attach APM emulation and acpiwdrt(4). 915 */ 916 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) { 917 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL, 918 CFARG_IATTR, "acpiapmbus", 919 CFARG_EOL); 920 } 921 922 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) { 923 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL, 924 CFARG_IATTR, "acpiwdrtbus", 925 CFARG_EOL); 926 } 927 928 return 0; 929 } 930 931 static void 932 acpi_rescan_early(struct acpi_softc *sc) 933 { 934 struct acpi_attach_args aa; 935 struct acpi_devnode *ad; 936 937 /* 938 * First scan for devices such as acpiec(4) that 939 * should be always attached before anything else. 940 * We want these devices to attach regardless of 941 * the device status and other restrictions. 942 */ 943 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 944 945 if (ad->ad_device != NULL) 946 continue; 947 948 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 949 continue; 950 951 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0) 952 continue; 953 954 KASSERT(ad->ad_handle != NULL); 955 956 aa.aa_node = ad; 957 aa.aa_iot = sc->sc_iot; 958 aa.aa_memt = sc->sc_memt; 959 if (ad->ad_pciinfo != NULL) { 960 aa.aa_pc = ad->ad_pciinfo->ap_pc; 961 aa.aa_pciflags = sc->sc_pciflags; 962 } 963 aa.aa_ic = sc->sc_ic; 964 aa.aa_dmat = ad->ad_dmat; 965 aa.aa_dmat64 = ad->ad_dmat64; 966 967 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 968 CFARG_IATTR, "acpinodebus", 969 CFARG_DEVHANDLE, devhandle_from_acpi(ad->ad_handle), 970 CFARG_EOL); 971 } 972 } 973 974 static void 975 acpi_rescan_nodes(struct acpi_softc *sc) 976 { 977 const char * const hpet_ids[] = { "PNP0103", NULL }; 978 struct acpi_attach_args aa; 979 struct acpi_devnode *ad; 980 ACPI_DEVICE_INFO *di; 981 982 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 983 984 if (ad->ad_device != NULL) 985 continue; 986 987 /* 988 * There is a bug in ACPICA: it defines the type 989 * of the scopes incorrectly for its own reasons. 990 */ 991 if (acpi_is_scope(ad) != false) 992 continue; 993 994 di = ad->ad_devinfo; 995 996 /* 997 * We only attach devices which are present, enabled, and 998 * functioning properly. However, if a device is enabled, 999 * it is decoding resources and we should claim these, 1000 * if possible. This requires changes to bus_space(9). 1001 */ 1002 if (di->Type == ACPI_TYPE_DEVICE && 1003 !acpi_device_present(ad->ad_handle)) { 1004 continue; 1005 } 1006 1007 if (di->Type == ACPI_TYPE_POWER) 1008 continue; 1009 1010 if (di->Type == ACPI_TYPE_PROCESSOR) 1011 continue; 1012 1013 if (acpi_match_hid(di, acpi_early_ids) != 0) 1014 continue; 1015 1016 if (acpi_match_hid(di, acpi_ignored_ids) != 0) 1017 continue; 1018 1019 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL) 1020 continue; 1021 1022 KASSERT(ad->ad_handle != NULL); 1023 1024 aa.aa_node = ad; 1025 aa.aa_iot = sc->sc_iot; 1026 aa.aa_memt = sc->sc_memt; 1027 if (ad->ad_pciinfo != NULL) { 1028 aa.aa_pc = ad->ad_pciinfo->ap_pc; 1029 aa.aa_pciflags = sc->sc_pciflags; 1030 } 1031 aa.aa_ic = sc->sc_ic; 1032 aa.aa_dmat = ad->ad_dmat; 1033 aa.aa_dmat64 = ad->ad_dmat64; 1034 1035 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print, 1036 CFARG_IATTR, "acpinodebus", 1037 CFARG_DEVHANDLE, devhandle_from_acpi(ad->ad_handle), 1038 CFARG_EOL); 1039 } 1040 } 1041 1042 static void 1043 acpi_rescan_capabilities(device_t self) 1044 { 1045 struct acpi_softc *sc = device_private(self); 1046 struct acpi_devnode *ad; 1047 ACPI_HANDLE tmp; 1048 ACPI_STATUS rv; 1049 1050 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1051 1052 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE) 1053 continue; 1054 1055 /* 1056 * Scan power resource capabilities. 1057 * 1058 * If any power states are supported, 1059 * at least _PR0 and _PR3 must be present. 1060 */ 1061 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp); 1062 1063 if (ACPI_SUCCESS(rv)) { 1064 ad->ad_flags |= ACPI_DEVICE_POWER; 1065 acpi_power_add(ad); 1066 } 1067 1068 /* 1069 * Scan wake-up capabilities. 1070 */ 1071 if (ad->ad_wakedev != NULL) { 1072 ad->ad_flags |= ACPI_DEVICE_WAKEUP; 1073 acpi_wakedev_add(ad); 1074 } 1075 1076 /* 1077 * Scan docking stations. 1078 */ 1079 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp); 1080 1081 if (ACPI_SUCCESS(rv)) 1082 ad->ad_flags |= ACPI_DEVICE_DOCK; 1083 1084 /* 1085 * Scan devices that are ejectable. 1086 */ 1087 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp); 1088 1089 if (ACPI_SUCCESS(rv)) 1090 ad->ad_flags |= ACPI_DEVICE_EJECT; 1091 } 1092 } 1093 1094 static int 1095 acpi_print(void *aux, const char *pnp) 1096 { 1097 struct acpi_attach_args *aa = aux; 1098 struct acpi_devnode *ad; 1099 const char *hid, *uid; 1100 ACPI_DEVICE_INFO *di; 1101 1102 ad = aa->aa_node; 1103 di = ad->ad_devinfo; 1104 1105 hid = di->HardwareId.String; 1106 uid = di->UniqueId.String; 1107 1108 if (pnp != NULL) { 1109 1110 if (di->Type != ACPI_TYPE_DEVICE) { 1111 1112 aprint_normal("%s (ACPI Object Type '%s') at %s", 1113 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp); 1114 1115 return UNCONF; 1116 } 1117 1118 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL) 1119 return 0; 1120 1121 aprint_normal("%s (%s) ", ad->ad_name, hid); 1122 acpi_print_dev(hid); 1123 aprint_normal("at %s", pnp); 1124 1125 return UNCONF; 1126 } 1127 1128 aprint_normal(" (%s", ad->ad_name); 1129 1130 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) { 1131 1132 aprint_normal(", %s", hid); 1133 1134 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) { 1135 1136 if (uid[0] == '\0') 1137 uid = "<null>"; 1138 1139 aprint_normal("-%s", uid); 1140 } 1141 } 1142 1143 aprint_normal(")"); 1144 1145 return UNCONF; 1146 } 1147 1148 /* 1149 * acpi_device_register -- 1150 * Called by the platform device_register() routine when 1151 * attaching devices. 1152 */ 1153 void 1154 acpi_device_register(device_t dev, void *v) 1155 { 1156 /* All we do here is set the devhandle in the device_t. */ 1157 device_t parent = device_parent(dev); 1158 ACPI_HANDLE hdl = NULL; 1159 1160 if (device_is_a(parent, "pci")) { 1161 const struct pci_attach_args *pa = v; 1162 struct acpi_devnode *ad; 1163 u_int segment; 1164 1165 #ifdef __HAVE_PCI_GET_SEGMENT 1166 segment = pci_get_segment(pa->pa_pc); 1167 #else 1168 segment = 0; 1169 #endif /* __HAVE_PCI_GET_SEGMENT */ 1170 1171 ad = acpi_pcidev_find(segment, 1172 pa->pa_bus, pa->pa_device, pa->pa_function); 1173 if (ad == NULL || (hdl = ad->ad_handle) == NULL) { 1174 aprint_debug_dev(dev, "no matching ACPI node\n"); 1175 return; 1176 } 1177 } else { 1178 return; 1179 } 1180 KASSERT(hdl != NULL); 1181 1182 device_set_handle(dev, devhandle_from_acpi(hdl)); 1183 } 1184 1185 /* 1186 * Notify. 1187 */ 1188 static void 1189 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux) 1190 { 1191 struct acpi_softc *sc = acpi_softc; 1192 struct acpi_devnode *ad; 1193 1194 KASSERT(sc != NULL); 1195 KASSERT(aux == NULL); 1196 KASSERT(acpi_active != 0); 1197 1198 if (acpi_suspended != 0) 1199 return; 1200 1201 /* 1202 * System: 0x00 - 0x7F. 1203 * Device: 0x80 - 0xFF. 1204 */ 1205 switch (event) { 1206 1207 case ACPI_NOTIFY_BUS_CHECK: 1208 case ACPI_NOTIFY_DEVICE_CHECK: 1209 case ACPI_NOTIFY_DEVICE_WAKE: 1210 case ACPI_NOTIFY_EJECT_REQUEST: 1211 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: 1212 case ACPI_NOTIFY_FREQUENCY_MISMATCH: 1213 case ACPI_NOTIFY_BUS_MODE_MISMATCH: 1214 case ACPI_NOTIFY_POWER_FAULT: 1215 case ACPI_NOTIFY_CAPABILITIES_CHECK: 1216 case ACPI_NOTIFY_DEVICE_PLD_CHECK: 1217 case ACPI_NOTIFY_RESERVED: 1218 case ACPI_NOTIFY_LOCALITY_UPDATE: 1219 break; 1220 } 1221 1222 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for " 1223 "%s (%p)\n", event, acpi_name(handle), handle)); 1224 1225 /* 1226 * We deliver notifications only to drivers 1227 * that have been successfully attached and 1228 * that have registered a handler with us. 1229 * The opaque pointer is always the device_t. 1230 */ 1231 SIMPLEQ_FOREACH(ad, &sc->ad_head, ad_list) { 1232 1233 if (ad->ad_device == NULL) 1234 continue; 1235 1236 if (ad->ad_notify == NULL) 1237 continue; 1238 1239 if (ad->ad_handle != handle) 1240 continue; 1241 1242 (*ad->ad_notify)(ad->ad_handle, event, ad->ad_device); 1243 1244 return; 1245 } 1246 1247 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X " 1248 "for %s (%p)\n", event, acpi_name(handle), handle); 1249 } 1250 1251 bool 1252 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify) 1253 { 1254 struct acpi_softc *sc = acpi_softc; 1255 1256 KASSERT(sc != NULL); 1257 KASSERT(acpi_active != 0); 1258 1259 if (acpi_suspended != 0) 1260 goto fail; 1261 1262 if (ad == NULL || notify == NULL) 1263 goto fail; 1264 1265 ad->ad_notify = notify; 1266 1267 return true; 1268 1269 fail: 1270 aprint_error_dev(sc->sc_dev, "failed to register notify " 1271 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle); 1272 1273 return false; 1274 } 1275 1276 void 1277 acpi_deregister_notify(struct acpi_devnode *ad) 1278 { 1279 1280 ad->ad_notify = NULL; 1281 } 1282 1283 /* 1284 * Fixed buttons. 1285 */ 1286 static void 1287 acpi_register_fixed_button(struct acpi_softc *sc, int event) 1288 { 1289 struct sysmon_pswitch *smpsw; 1290 ACPI_STATUS rv; 1291 int type; 1292 1293 switch (event) { 1294 1295 case ACPI_EVENT_POWER_BUTTON: 1296 1297 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) 1298 return; 1299 1300 type = PSWITCH_TYPE_POWER; 1301 smpsw = &sc->sc_smpsw_power; 1302 break; 1303 1304 case ACPI_EVENT_SLEEP_BUTTON: 1305 1306 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) 1307 return; 1308 1309 type = PSWITCH_TYPE_SLEEP; 1310 smpsw = &sc->sc_smpsw_sleep; 1311 break; 1312 1313 default: 1314 rv = AE_TYPE; 1315 goto fail; 1316 } 1317 1318 smpsw->smpsw_type = type; 1319 smpsw->smpsw_name = device_xname(sc->sc_dev); 1320 1321 if (sysmon_pswitch_register(smpsw) != 0) { 1322 rv = AE_ERROR; 1323 goto fail; 1324 } 1325 1326 AcpiClearEvent(event); 1327 1328 rv = AcpiInstallFixedEventHandler(event, 1329 acpi_fixed_button_handler, smpsw); 1330 1331 if (ACPI_FAILURE(rv)) { 1332 sysmon_pswitch_unregister(smpsw); 1333 goto fail; 1334 } 1335 1336 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n", 1337 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep"); 1338 1339 return; 1340 1341 fail: 1342 aprint_error_dev(sc->sc_dev, "failed to register " 1343 "fixed event %d: %s\n", event, AcpiFormatException(rv)); 1344 } 1345 1346 static void 1347 acpi_deregister_fixed_button(struct acpi_softc *sc, int event) 1348 { 1349 struct sysmon_pswitch *smpsw; 1350 ACPI_STATUS rv; 1351 1352 switch (event) { 1353 1354 case ACPI_EVENT_POWER_BUTTON: 1355 smpsw = &sc->sc_smpsw_power; 1356 1357 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) { 1358 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER); 1359 return; 1360 } 1361 1362 break; 1363 1364 case ACPI_EVENT_SLEEP_BUTTON: 1365 smpsw = &sc->sc_smpsw_sleep; 1366 1367 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) { 1368 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP); 1369 return; 1370 } 1371 1372 break; 1373 1374 default: 1375 rv = AE_TYPE; 1376 goto fail; 1377 } 1378 1379 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler); 1380 1381 if (ACPI_SUCCESS(rv)) { 1382 sysmon_pswitch_unregister(smpsw); 1383 return; 1384 } 1385 1386 fail: 1387 aprint_error_dev(sc->sc_dev, "failed to deregister " 1388 "fixed event: %s\n", AcpiFormatException(rv)); 1389 } 1390 1391 static uint32_t 1392 acpi_fixed_button_handler(void *context) 1393 { 1394 static const int handler = OSL_NOTIFY_HANDLER; 1395 struct sysmon_pswitch *smpsw = context; 1396 1397 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw); 1398 1399 return ACPI_INTERRUPT_HANDLED; 1400 } 1401 1402 static void 1403 acpi_fixed_button_pressed(void *context) 1404 { 1405 struct sysmon_pswitch *smpsw = context; 1406 1407 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n", 1408 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ? 1409 "power" : "sleep")); 1410 1411 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED); 1412 } 1413 1414 /* 1415 * Sleep. 1416 */ 1417 static void 1418 acpi_sleep_init(struct acpi_softc *sc) 1419 { 1420 uint8_t a, b, i; 1421 ACPI_STATUS rv; 1422 1423 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1); 1424 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3); 1425 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5); 1426 1427 /* 1428 * Evaluate supported sleep states. 1429 */ 1430 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) { 1431 1432 rv = AcpiGetSleepTypeData(i, &a, &b); 1433 1434 if (ACPI_SUCCESS(rv)) 1435 sc->sc_sleepstates |= __BIT(i); 1436 } 1437 } 1438 1439 /* 1440 * Must be called with interrupts enabled. 1441 */ 1442 void 1443 acpi_enter_sleep_state(int state) 1444 { 1445 struct acpi_softc *sc = acpi_softc; 1446 ACPI_STATUS rv; 1447 1448 if (acpi_softc == NULL) 1449 return; 1450 1451 if (state == sc->sc_sleepstate) 1452 return; 1453 1454 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5) 1455 return; 1456 1457 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state); 1458 1459 switch (state) { 1460 1461 case ACPI_STATE_S0: 1462 sc->sc_sleepstate = ACPI_STATE_S0; 1463 return; 1464 1465 case ACPI_STATE_S1: 1466 case ACPI_STATE_S2: 1467 case ACPI_STATE_S3: 1468 case ACPI_STATE_S4: 1469 1470 if ((sc->sc_sleepstates & __BIT(state)) == 0) { 1471 aprint_error_dev(sc->sc_dev, "sleep state " 1472 "S%d is not available\n", state); 1473 return; 1474 } 1475 1476 /* 1477 * Evaluate the _TTS method. This should be done before 1478 * pmf_system_suspend(9) and the evaluation of _PTS. 1479 * We should also re-evaluate this once we return to 1480 * S0 or if we abort the sleep state transition in the 1481 * middle (see ACPI 3.0, section 7.3.6). In reality, 1482 * however, the _TTS method is seldom seen in the field. 1483 */ 1484 rv = acpi_eval_set_integer(NULL, "\\_TTS", state); 1485 1486 if (ACPI_SUCCESS(rv)) 1487 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n"); 1488 1489 if (state != ACPI_STATE_S1 && 1490 pmf_system_suspend(PMF_Q_NONE) != true) { 1491 aprint_error_dev(sc->sc_dev, "aborting suspend\n"); 1492 break; 1493 } 1494 1495 /* 1496 * This will evaluate the _PTS and _SST methods, 1497 * but unlike the documentation claims, not _GTS, 1498 * which is evaluated in AcpiEnterSleepState(). 1499 * This must be called with interrupts enabled. 1500 */ 1501 rv = AcpiEnterSleepStatePrep(state); 1502 1503 if (ACPI_FAILURE(rv)) { 1504 aprint_error_dev(sc->sc_dev, "failed to prepare " 1505 "S%d: %s\n", state, AcpiFormatException(rv)); 1506 break; 1507 } 1508 1509 /* 1510 * After the _PTS method has been evaluated, we can 1511 * enable wake and evaluate _PSW (ACPI 4.0, p. 284). 1512 */ 1513 acpi_wakedev_commit(sc, state); 1514 1515 sc->sc_sleepstate = state; 1516 1517 if (state == ACPI_STATE_S1) { 1518 1519 /* 1520 * Before the transition to S1, CPU caches 1521 * must be flushed (see ACPI 4.0, 7.3.4.2). 1522 * 1523 * Note that interrupts must be off before 1524 * calling AcpiEnterSleepState(). Conversely, 1525 * AcpiLeaveSleepState() should always be 1526 * called with interrupts enabled. 1527 */ 1528 acpi_md_OsDisableInterrupt(); 1529 1530 ACPI_FLUSH_CPU_CACHE(); 1531 rv = AcpiEnterSleepState(state); 1532 1533 if (ACPI_FAILURE(rv)) 1534 aprint_error_dev(sc->sc_dev, "failed to " 1535 "enter S1: %s\n", AcpiFormatException(rv)); 1536 1537 /* 1538 * Clear fixed events and disable all GPEs before 1539 * interrupts are enabled. 1540 */ 1541 AcpiClearEvent(ACPI_EVENT_PMTIMER); 1542 AcpiClearEvent(ACPI_EVENT_GLOBAL); 1543 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON); 1544 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON); 1545 AcpiClearEvent(ACPI_EVENT_RTC); 1546 #if (!ACPI_REDUCED_HARDWARE) 1547 AcpiHwDisableAllGpes(); 1548 #endif 1549 1550 acpi_md_OsEnableInterrupt(); 1551 rv = AcpiLeaveSleepState(state); 1552 1553 } else { 1554 1555 (void)acpi_md_sleep(state); 1556 1557 if (state == ACPI_STATE_S4) 1558 AcpiEnable(); 1559 1560 (void)pmf_system_bus_resume(PMF_Q_NONE); 1561 (void)AcpiLeaveSleepState(state); 1562 (void)AcpiSetFirmwareWakingVector(0, 0); 1563 (void)pmf_system_resume(PMF_Q_NONE); 1564 } 1565 1566 /* 1567 * No wake GPEs should be enabled at runtime. 1568 */ 1569 acpi_wakedev_commit(sc, ACPI_STATE_S0); 1570 break; 1571 1572 case ACPI_STATE_S5: 1573 1574 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5); 1575 1576 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5); 1577 1578 if (ACPI_FAILURE(rv)) { 1579 aprint_error_dev(sc->sc_dev, "failed to prepare " 1580 "S%d: %s\n", state, AcpiFormatException(rv)); 1581 break; 1582 } 1583 1584 (void)AcpiDisableAllGpes(); 1585 1586 DELAY(1000000); 1587 1588 sc->sc_sleepstate = state; 1589 acpi_md_OsDisableInterrupt(); 1590 1591 (void)AcpiEnterSleepState(ACPI_STATE_S5); 1592 1593 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n"); 1594 1595 break; 1596 } 1597 1598 sc->sc_sleepstate = ACPI_STATE_S0; 1599 1600 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0); 1601 } 1602 1603 /* 1604 * Sysctl. 1605 */ 1606 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup") 1607 { 1608 const struct sysctlnode *rnode, *snode; 1609 int err; 1610 1611 err = sysctl_createv(clog, 0, NULL, &rnode, 1612 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1613 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"), 1614 NULL, 0, NULL, 0, 1615 CTL_HW, CTL_CREATE, CTL_EOL); 1616 1617 if (err != 0) 1618 return; 1619 1620 (void)sysctl_createv(NULL, 0, &rnode, NULL, 1621 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1622 "root", SYSCTL_DESCR("ACPI root pointer"), 1623 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer), 1624 CTL_CREATE, CTL_EOL); 1625 1626 err = sysctl_createv(clog, 0, &rnode, &snode, 1627 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1628 "sleep", SYSCTL_DESCR("ACPI sleep"), 1629 NULL, 0, NULL, 0, 1630 CTL_CREATE, CTL_EOL); 1631 1632 if (err != 0) 1633 return; 1634 1635 (void)sysctl_createv(NULL, 0, &snode, NULL, 1636 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 1637 "state", SYSCTL_DESCR("System sleep state"), 1638 sysctl_hw_acpi_sleepstate, 0, NULL, 0, 1639 CTL_CREATE, CTL_EOL); 1640 1641 (void)sysctl_createv(NULL, 0, &snode, NULL, 1642 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING, 1643 "states", SYSCTL_DESCR("Supported sleep states"), 1644 sysctl_hw_acpi_sleepstates, 0, NULL, 0, 1645 CTL_CREATE, CTL_EOL); 1646 1647 err = sysctl_createv(clog, 0, &rnode, &rnode, 1648 CTLFLAG_PERMANENT, CTLTYPE_NODE, 1649 "stat", SYSCTL_DESCR("ACPI statistics"), 1650 NULL, 0, NULL, 0, 1651 CTL_CREATE, CTL_EOL); 1652 1653 if (err != 0) 1654 return; 1655 1656 (void)sysctl_createv(clog, 0, &rnode, NULL, 1657 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1658 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"), 1659 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount), 1660 CTL_CREATE, CTL_EOL); 1661 1662 (void)sysctl_createv(clog, 0, &rnode, NULL, 1663 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1664 "sci", SYSCTL_DESCR("Number of SCI interrupts"), 1665 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount), 1666 CTL_CREATE, CTL_EOL); 1667 1668 (void)sysctl_createv(clog, 0, &rnode, NULL, 1669 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1670 "fixed", SYSCTL_DESCR("Number of fixed events"), 1671 sysctl_hw_acpi_fixedstats, 0, NULL, 0, 1672 CTL_CREATE, CTL_EOL); 1673 1674 (void)sysctl_createv(clog, 0, &rnode, NULL, 1675 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD, 1676 "method", SYSCTL_DESCR("Number of methods executed"), 1677 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount), 1678 CTL_CREATE, CTL_EOL); 1679 1680 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t)); 1681 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t)); 1682 } 1683 1684 static int 1685 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS) 1686 { 1687 struct sysctlnode node; 1688 uint64_t t; 1689 int err, i; 1690 1691 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++) 1692 t += AcpiFixedEventCount[i]; 1693 1694 node = *rnode; 1695 node.sysctl_data = &t; 1696 1697 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1698 1699 if (err || newp == NULL) 1700 return err; 1701 1702 return 0; 1703 } 1704 1705 static int 1706 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS) 1707 { 1708 struct acpi_softc *sc = acpi_softc; 1709 struct sysctlnode node; 1710 int err, t; 1711 1712 if (acpi_softc == NULL) 1713 return ENOSYS; 1714 1715 node = *rnode; 1716 t = sc->sc_sleepstate; 1717 node.sysctl_data = &t; 1718 1719 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1720 1721 if (err || newp == NULL) 1722 return err; 1723 1724 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5) 1725 return EINVAL; 1726 1727 acpi_enter_sleep_state(t); 1728 1729 return 0; 1730 } 1731 1732 static int 1733 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS) 1734 { 1735 struct acpi_softc *sc = acpi_softc; 1736 struct sysctlnode node; 1737 char t[3 * 6 + 1]; 1738 int err; 1739 1740 if (acpi_softc == NULL) 1741 return ENOSYS; 1742 1743 (void)memset(t, '\0', sizeof(t)); 1744 1745 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s", 1746 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "", 1747 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "", 1748 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "", 1749 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "", 1750 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "", 1751 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : ""); 1752 1753 node = *rnode; 1754 node.sysctl_data = &t; 1755 1756 err = sysctl_lookup(SYSCTLFN_CALL(&node)); 1757 1758 if (err || newp == NULL) 1759 return err; 1760 1761 return 0; 1762 } 1763 1764 /* 1765 * Tables. 1766 */ 1767 ACPI_PHYSICAL_ADDRESS 1768 acpi_OsGetRootPointer(void) 1769 { 1770 ACPI_PHYSICAL_ADDRESS PhysicalAddress; 1771 1772 /* 1773 * We let MD code handle this since there are multiple ways to do it: 1774 * 1775 * IA-32: Use AcpiFindRootPointer() to locate the RSDP. 1776 * 1777 * IA-64: Use the EFI. 1778 */ 1779 PhysicalAddress = acpi_md_OsGetRootPointer(); 1780 1781 if (acpi_root_pointer == 0) 1782 acpi_root_pointer = PhysicalAddress; 1783 1784 return PhysicalAddress; 1785 } 1786 1787 static ACPI_TABLE_HEADER * 1788 acpi_map_rsdt(void) 1789 { 1790 ACPI_PHYSICAL_ADDRESS paddr; 1791 ACPI_TABLE_RSDP *rsdp; 1792 1793 paddr = AcpiOsGetRootPointer(); 1794 1795 if (paddr == 0) 1796 return NULL; 1797 1798 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP)); 1799 1800 if (rsdp == NULL) 1801 return NULL; 1802 1803 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress) 1804 paddr = rsdp->XsdtPhysicalAddress; 1805 else 1806 paddr = rsdp->RsdtPhysicalAddress; 1807 1808 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP)); 1809 1810 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER)); 1811 } 1812 1813 /* 1814 * XXX: Refactor to be a generic function that unmaps tables. 1815 */ 1816 static void 1817 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt) 1818 { 1819 1820 if (rsdt == NULL) 1821 return; 1822 1823 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER)); 1824 } 1825 1826 /* 1827 * XXX: Refactor to be a generic function that maps tables. 1828 */ 1829 ACPI_STATUS 1830 acpi_madt_map(void) 1831 { 1832 ACPI_STATUS rv; 1833 1834 if (madt_header != NULL) 1835 return AE_ALREADY_EXISTS; 1836 1837 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header); 1838 1839 if (ACPI_FAILURE(rv)) 1840 return rv; 1841 1842 return AE_OK; 1843 } 1844 1845 void 1846 acpi_madt_unmap(void) 1847 { 1848 madt_header = NULL; 1849 } 1850 1851 ACPI_STATUS 1852 acpi_gtdt_map(void) 1853 { 1854 ACPI_STATUS rv; 1855 1856 if (gtdt_header != NULL) 1857 return AE_ALREADY_EXISTS; 1858 1859 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header); 1860 1861 if (ACPI_FAILURE(rv)) 1862 return rv; 1863 1864 return AE_OK; 1865 } 1866 1867 void 1868 acpi_gtdt_unmap(void) 1869 { 1870 gtdt_header = NULL; 1871 } 1872 1873 /* 1874 * XXX: Refactor to be a generic function that walks tables. 1875 */ 1876 void 1877 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux) 1878 { 1879 ACPI_SUBTABLE_HEADER *hdrp; 1880 char *madtend, *where; 1881 1882 madtend = (char *)madt_header + madt_header->Length; 1883 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT); 1884 1885 while (where < madtend) { 1886 1887 hdrp = (ACPI_SUBTABLE_HEADER *)where; 1888 1889 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1890 break; 1891 1892 where += hdrp->Length; 1893 } 1894 } 1895 1896 void 1897 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux) 1898 { 1899 ACPI_GTDT_HEADER *hdrp; 1900 char *gtdtend, *where; 1901 1902 gtdtend = (char *)gtdt_header + gtdt_header->Length; 1903 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT); 1904 1905 while (where < gtdtend) { 1906 1907 hdrp = (ACPI_GTDT_HEADER *)where; 1908 1909 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux))) 1910 break; 1911 1912 where += hdrp->Length; 1913 } 1914 } 1915 1916 /* 1917 * Miscellaneous. 1918 */ 1919 static bool 1920 acpi_is_scope(struct acpi_devnode *ad) 1921 { 1922 int i; 1923 1924 /* 1925 * Return true if the node is a root scope. 1926 */ 1927 if (ad->ad_parent == NULL) 1928 return false; 1929 1930 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT) 1931 return false; 1932 1933 for (i = 0; i < __arraycount(acpi_scopes); i++) { 1934 1935 if (acpi_scopes[i] == NULL) 1936 continue; 1937 1938 if (ad->ad_handle == acpi_scopes[i]) 1939 return true; 1940 } 1941 1942 return false; 1943 } 1944 1945 bool 1946 acpi_device_present(ACPI_HANDLE handle) 1947 { 1948 ACPI_STATUS rv; 1949 ACPI_INTEGER sta; 1950 1951 rv = acpi_eval_integer(handle, "_STA", &sta); 1952 1953 if (ACPI_FAILURE(rv)) { 1954 /* No _STA method -> must be there */ 1955 return rv == AE_NOT_FOUND; 1956 } 1957 1958 return (sta & ACPI_STA_OK) == ACPI_STA_OK; 1959 } 1960 1961 /* 1962 * ACPIVERBOSE. 1963 */ 1964 void 1965 acpi_load_verbose(void) 1966 { 1967 1968 if (acpi_verbose_loaded == 0) 1969 module_autoload("acpiverbose", MODULE_CLASS_MISC); 1970 } 1971 1972 void 1973 acpi_print_verbose_stub(struct acpi_softc *sc) 1974 { 1975 1976 acpi_load_verbose(); 1977 1978 if (acpi_verbose_loaded != 0) 1979 acpi_print_verbose(sc); 1980 } 1981 1982 void 1983 acpi_print_dev_stub(const char *pnpstr) 1984 { 1985 1986 acpi_load_verbose(); 1987 1988 if (acpi_verbose_loaded != 0) 1989 acpi_print_dev(pnpstr); 1990 } 1991 1992 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */ 1993 1994 /* 1995 * ACPI_ACTIVATE_DEV. 1996 */ 1997 static void 1998 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di) 1999 { 2000 2001 #ifndef ACPI_ACTIVATE_DEV 2002 return; 2003 } 2004 #else 2005 static const int valid = ACPI_VALID_HID; 2006 ACPI_DEVICE_INFO *newdi; 2007 ACPI_STATUS rv; 2008 2009 2010 /* 2011 * If the device is valid and present, 2012 * but not enabled, try to activate it. 2013 */ 2014 if (((*di)->Valid & valid) != valid) 2015 return; 2016 2017 if (!acpi_device_present(handle)) 2018 return; 2019 2020 rv = acpi_allocate_resources(handle); 2021 2022 if (ACPI_FAILURE(rv)) 2023 goto fail; 2024 2025 rv = AcpiGetObjectInfo(handle, &newdi); 2026 2027 if (ACPI_FAILURE(rv)) 2028 goto fail; 2029 2030 ACPI_FREE(*di); 2031 *di = newdi; 2032 2033 aprint_verbose_dev(acpi_softc->sc_dev, 2034 "%s activated\n", (*di)->HardwareId.String); 2035 2036 return; 2037 2038 fail: 2039 aprint_error_dev(acpi_softc->sc_dev, "failed to " 2040 "activate %s\n", (*di)->HardwareId.String); 2041 } 2042 2043 /* 2044 * XXX: This very incomplete. 2045 */ 2046 ACPI_STATUS 2047 acpi_allocate_resources(ACPI_HANDLE handle) 2048 { 2049 ACPI_BUFFER bufp, bufc, bufn; 2050 ACPI_RESOURCE *resp, *resc, *resn; 2051 ACPI_RESOURCE_IRQ *irq; 2052 #if 0 2053 ACPI_RESOURCE_EXTENDED_IRQ *xirq; 2054 #endif 2055 ACPI_STATUS rv; 2056 uint delta; 2057 2058 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources); 2059 if (ACPI_FAILURE(rv)) 2060 goto out; 2061 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources); 2062 if (ACPI_FAILURE(rv)) { 2063 goto out1; 2064 } 2065 2066 bufn.Length = 1000; 2067 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK); 2068 resp = bufp.Pointer; 2069 resc = bufc.Pointer; 2070 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG && 2071 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2072 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG) 2073 resp = ACPI_NEXT_RESOURCE(resp); 2074 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG) 2075 break; 2076 /* Found identical Id */ 2077 resn->Type = resc->Type; 2078 switch (resc->Type) { 2079 case ACPI_RESOURCE_TYPE_IRQ: 2080 memcpy(&resn->Data, &resp->Data, 2081 sizeof(ACPI_RESOURCE_IRQ)); 2082 irq = (ACPI_RESOURCE_IRQ *)&resn->Data; 2083 irq->Interrupts[0] = 2084 ((ACPI_RESOURCE_IRQ *)&resp->Data)-> 2085 Interrupts[irq->InterruptCount-1]; 2086 irq->InterruptCount = 1; 2087 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ); 2088 break; 2089 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: 2090 memcpy(&resn->Data, &resp->Data, 2091 sizeof(ACPI_RESOURCE_EXTENDED_IRQ)); 2092 #if 0 2093 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data; 2094 /* 2095 * XXX: Not duplicating the interrupt logic above 2096 * because its not clear what it accomplishes. 2097 */ 2098 xirq->Interrupts[0] = 2099 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)-> 2100 Interrupts[irq->NumberOfInterrupts-1]; 2101 xirq->NumberOfInterrupts = 1; 2102 #endif 2103 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ); 2104 break; 2105 case ACPI_RESOURCE_TYPE_IO: 2106 memcpy(&resn->Data, &resp->Data, 2107 sizeof(ACPI_RESOURCE_IO)); 2108 resn->Length = resp->Length; 2109 break; 2110 default: 2111 aprint_error_dev(acpi_softc->sc_dev, 2112 "%s: invalid type %u\n", __func__, resc->Type); 2113 rv = AE_BAD_DATA; 2114 goto out2; 2115 } 2116 resc = ACPI_NEXT_RESOURCE(resc); 2117 resn = ACPI_NEXT_RESOURCE(resn); 2118 resp = ACPI_NEXT_RESOURCE(resp); 2119 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer; 2120 if (delta >= 2121 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) { 2122 bufn.Length *= 2; 2123 bufn.Pointer = realloc(bufn.Pointer, bufn.Length, 2124 M_ACPI, M_WAITOK); 2125 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer + 2126 delta); 2127 } 2128 } 2129 2130 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) { 2131 aprint_error_dev(acpi_softc->sc_dev, 2132 "%s: resc not exhausted\n", __func__); 2133 rv = AE_BAD_DATA; 2134 goto out3; 2135 } 2136 2137 resn->Type = ACPI_RESOURCE_TYPE_END_TAG; 2138 rv = AcpiSetCurrentResources(handle, &bufn); 2139 2140 if (ACPI_FAILURE(rv)) 2141 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set " 2142 "resources: %s\n", __func__, AcpiFormatException(rv)); 2143 2144 out3: 2145 free(bufn.Pointer, M_ACPI); 2146 out2: 2147 ACPI_FREE(bufc.Pointer); 2148 out1: 2149 ACPI_FREE(bufp.Pointer); 2150 out: 2151 return rv; 2152 } 2153 2154 #endif /* ACPI_ACTIVATE_DEV */ 2155
Indexes created Sun Sep 21 20:09:37 GMT 2025